53439473 has 2 divisors, whose sum is σ = 53439474. Its totient is φ = 53439472.

The previous prime is 53439469. The next prime is 53439487. The reversal of 53439473 is 37493435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51165409 + 2274064 = 7153^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 53439473 - 2² = 53439469 is a prime.

It is not a weakly prime, because it can be changed into another prime (53439413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26719736 + 26719737.

It is an arithmetic number, because the mean of its divisors is an integer number (26719737).

Almost surely, 2^53439473 is an apocalyptic number.

It is an amenable number.

53439473 is a deficient number, since it is larger than the sum of its proper divisors (1).

53439473 is an equidigital number, since it uses as much as digits as its factorization.

53439473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 38.

The square root of 53439473 is about 7310.2307077137. The cubic root of 53439473 is about 376.6639492151.

The spelling of 53439473 in words is "fifty-three million, four hundred thirty-nine thousand, four hundred seventy-three".